Sequences

Find the sequence;  2, 4, 6, 8,...........

• add 2
• multiply by 2

Find the sequence 10, 20, 30, 40.........

• Multiply by 10
• Add 10  
• Multiply by 2

What kind of sequence is the pattern 400, 200, 100, 50, 25, ...?

• Arithmetic
• Geometric
• Neither

256, 128, 64, 32, ...

What's next?

• 24

• 18

• 16

• 8

Identify the next three terms of the sequence below:

-6, -10, -14,...

• -17, -21, -25

• 17, 21, 25

• 18, 22, 26

• -18, -22, -26

Which of the following is not an arithmetic sequence?

• 1/2, 1, 3/2, 2

• 11, 14, 17, 20

• 2, 4, 8, 16

• 5, 2, -1, -4

-21, -16, -11, -6, ...

Is this sequence arithmetic, geometric, or neither?

• arithmetic (common difference d = 5)

• geometric (common ratio r = 5)

• neither (no common difference OR common ratio) neither (no common difference OR common ratio)

3, 9, 15, 22, ...

Is this sequence arithmetic, geometric, or neither?

• arithmetic (common difference d = 6)

• geometric (common ratio r = 4)

• neither (no common difference OR common ratio) neither (no common difference OR common ratio)

The next term of the sequence 2,4,8,16 are

• 64
• 32
• 108
• 20

What kind of sequence is the pattern 15, 17, 20, 24, 29, ...?

• Arithmetic
• Geometric
• Neither